FRIEDRICH VON DER KOHLEN
A decisive factor is the appropriate steel which is employed. From the initial material used to the finished knife, many production steps are necessary:

1. Pressing


2. Punching, Ungreasing and dehurring, Applying,
Hardnesses up to 1070° Celsius, Paring,
Hardening under ice at –80° Celsius (to achieve
higher wearing and corrosion resistance)
Tempering at 210° Celsius for the reduction of stress fields

3. Grinding of the back
Preliminary grinding

4. Grinding of the beard
Final grinding
Cleaning

5. Etching of the logo
Cleaning